[8.1-stable] fix(tinymce): Do not exceed height of element window

[alchemycms-bot]

Backport

This will backport the following commits from main to 8.1-stable:

• Merge pull request #3642 from AlchemyCMS/fix-tinymce-height

Questions ?

Please refer to the Backport tool documentation

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 97.48%. Comparing base (83ca4a1) to head (922b7b1).
⚠️ Report is 7 commits behind head on 8.1-stable.

Additional details and impacted files

@@             Coverage Diff             @@
##           8.1-stable    #3651   +/-   ##
===========================================
  Coverage       97.48%   97.48%           
===========================================
  Files             314      314           
  Lines            8272     8272           
===========================================
  Hits             8064     8064           
  Misses            208      208           

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